Im part of a military honors group, and a piper played last week as the guests were leaving. He played for about 10 mins straight and I have to admit, as a piper it was too much. I think if he played a long air or two shorter, paused for a couple minutes and repeated it mightíve been a bit better for everyone. He was losing steam and could hear the drone tone shifting and the chanter cutting in and out. He was a great piper in his defense, just seemed in my opinion to take away from the ambiance. Iím sure each situation is different and a request from the person paying you to play specific takes precedence